Added OggTheora Metadata

OggTheora wasn't support up until now. Now the config is there and the
import works

fixes #216
2 jobs for 216-oggtheora-support in 4 minutes and 36 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #3464
docker
test_api

00:04:04

failed #3465
docker
test_front

00:04:35

 
Name Stage Failure
failed
test_front Test
Exit code: 1
Command: sh
Arguments: -c cross-env BABEL_ENV=test karma start test/unit/karma.conf.js --single-run
Directory: /builds/EorlBruder/funkwhale/front
Output:
".
info If you think this is a bug, please open a bug report with the information provided in "/builds/EorlBruder/funkwhale/front/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.
ERROR: Job failed: exit code 1